Degradable packaging box

The utility model discloses a degradable packaging box, and belongs to the field of meal boxes. A degradable packaging box comprises a box body and a box cover, the box cover is connected with an upper opening of the box body in an interference fit mode, a sealing plate is arranged on the upper opening of the box body, a circle of sealing adhesive tape is arranged on the outer side of the sealing plate, a plurality of sets of adhesive blocks are arranged on the inner wall of the box cover, and a layer of preservative film is pasted in the box cover through the adhesive blocks. A plurality of groups of supporting seats are arranged at the bottom of the box body, and cavities are formed in the supporting seats; dishes in the box body can be preserved conveniently through the arrangement of the preservative film, the preservative film can be pasted and fixed conveniently through the arrangement of the sealing adhesive tape, soup in the box body is prevented from overflowing, the sealing effect of the box cover o